Home / 5,142.43-7,715.27-2,222.11

Finding the Fourth Proportional to 5,142.43, 7,715.27 and 2,222.11

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Solution

The fourth proportional to 5,142.43, 7,715.27 and 2,222.11 is: 3,333.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,142.43 : 7,715.27 = 2,222.11 : x
  2. Step 2: Convert to fraction form
    5,142.43/7,715.27 = 2,222.11/x
  3. Step 3: Cross multiply
    5,142.43x = 7,715.27 × 2,222.11
  4. Step 4: Simplify right side
    5,142.43x = 17,144,178.62
  5. Step 5: Solve for x
    x = 17,144,178.62/5,142.43
  6. Step 6: Final answer
    x = 3,333.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.